Can I use headphones with the headset?

Yes.

The headset has built-in speakers. These speakers are good for self-guided training or training in small groups. However, in larger open settings with many people or a lot of external noise, we recommended using over-ear headphones (as opposed to on-ear or earbuds) for comfort, noise cancellation, and sanitation purposes. Plug the headphones into the headphone jack on the headset.